Allow to send e-mails to attendees individually (#1299)

* .

* Add a position detail page to the frontend

* Mail templates

* Send mails

* Send reminder email

* Add position support to sendmail plugin

* Add and fix some tests

* Fix failing test on real databases

src/pretix/control/forms/event.py

@@ -844,7 +844,7 @@ class MailSettingsForm(SettingsForm):
     )
 
     mail_text_order_placed = I18nFormField(
-        label=_("Text"),
+        label=_("Text sent to order contact address"),
         required=False,
         widget=I18nTextarea,
         help_text=_("Available placeholders: {event}, {total_with_currency}, {total}, {currency}, {date}, "
@@ -852,20 +852,62 @@ class MailSettingsForm(SettingsForm):
         validators=[PlaceholderValidator(['{event}', '{total_with_currency}', '{total}', '{currency}', '{date}',
                                           '{payment_info}', '{url}', '{invoice_name}', '{invoice_company}'])]
     )
+    mail_send_order_placed_attendee = forms.BooleanField(
+        label=_("Send an email to attendees"),
+        help_text=_('If the order contains attendees with email addresses different from the person who orders the '
+                    'tickets, the following email will be sent out to the attendees.'),
+        required=False,
+    )
+    mail_text_order_placed_attendee = I18nFormField(
+        label=_("Text sent to attendees"),
+        required=False,
+        widget=I18nTextarea,
+        help_text=_("Available placeholders: {event}, {url}, {attendee_name}"),
+        validators=[PlaceholderValidator(['{event}', '{url}', '{attendee_name}'])],
+    )
+
     mail_text_order_paid = I18nFormField(
-        label=_("Text"),
+        label=_("Text sent to order contact address"),
         required=False,
         widget=I18nTextarea,
         help_text=_("Available placeholders: {event}, {url}, {invoice_name}, {invoice_company}, {payment_info}"),
         validators=[PlaceholderValidator(['{event}', '{url}', '{invoice_name}', '{invoice_company}', '{payment_info}'])]
     )
+    mail_send_order_paid_attendee = forms.BooleanField(
+        label=_("Send an email to attendees"),
+        help_text=_('If the order contains attendees with email addresses different from the person who orders the '
+                    'tickets, the following email will be sent out to the attendees.'),
+        required=False,
+    )
+    mail_text_order_paid_attendee = I18nFormField(
+        label=_("Text sent to attendees"),
+        required=False,
+        widget=I18nTextarea,
+        help_text=_("Available placeholders: {event}, {url}, {attendee_name}"),
+        validators=[PlaceholderValidator(['{event}', '{url}', '{attendee_name}'])],
+    )
+
     mail_text_order_free = I18nFormField(
-        label=_("Text"),
+        label=_("Text sent to order contact address"),
         required=False,
         widget=I18nTextarea,
         help_text=_("Available placeholders: {event}, {url}, {invoice_name}, {invoice_company}"),
         validators=[PlaceholderValidator(['{event}', '{url}', '{invoice_name}', '{invoice_company}'])]
     )
+    mail_send_order_free_attendee = forms.BooleanField(
+        label=_("Send an email to attendees"),
+        help_text=_('If the order contains attendees with email addresses different from the person who orders the '
+                    'tickets, the following email will be sent out to the attendees.'),
+        required=False,
+    )
+    mail_text_order_free_attendee = I18nFormField(
+        label=_("Text sent to attendees"),
+        required=False,
+        widget=I18nTextarea,
+        help_text=_("Available placeholders: {event}, {url}, {attendee_name}"),
+        validators=[PlaceholderValidator(['{event}', '{url}', '{attendee_name}'])],
+    )
+
     mail_text_order_changed = I18nFormField(
         label=_("Text"),
         required=False,
@@ -925,12 +967,25 @@ class MailSettingsForm(SettingsForm):
                                           '{invoice_name}', '{invoice_company}'])]
     )
     mail_text_download_reminder = I18nFormField(
-        label=_("Text"),
+        label=_("Text sent to order contact address"),
         required=False,
         widget=I18nTextarea,
         help_text=_("Available placeholders: {event}, {url}"),
         validators=[PlaceholderValidator(['{event}', '{url}'])]
     )
+    mail_send_download_reminder_attendee = forms.BooleanField(
+        label=_("Send an email to attendees"),
+        help_text=_('If the order contains attendees with email addresses different from the person who orders the '
+                    'tickets, the following email will be sent out to the attendees.'),
+        required=False,
+    )
+    mail_text_download_reminder_attendee = I18nFormField(
+        label=_("Text sent to attendees"),
+        required=False,
+        widget=I18nTextarea,
+        help_text=_("Available placeholders: {attendee_name}, {event}, {url}"),
+        validators=[PlaceholderValidator(['{attendee_name}', '{event}', '{url}'])]
+    )
     mail_days_download_reminder = forms.IntegerField(
         label=_("Number of days"),
         required=False,
@@ -1011,13 +1066,26 @@ class MailSettingsForm(SettingsForm):
             (r.identifier, r.verbose_name) for r in event.get_html_mail_renderers().values()
         ]
         keys = list(event.meta_data.keys())
-        for k, v in self.fields.items():
+        name_scheme = PERSON_NAME_SCHEMES[event.settings.name_scheme]
+        for k, v in list(self.fields.items()):
             if k.startswith('mail_text_'):
                 v.help_text = str(v.help_text) + ', ' + ', '.join({
                     '{meta_' + p + '}' for p in keys
                 })
                 v.validators[0].limit_value += ['{meta_' + p + '}' for p in keys]
 
+                if '{attendee_name}' in v.validators[0].limit_value:
+                    for f, l, w in name_scheme['fields']:
+                        if f == 'full_name':
+                            continue
+                        v.help_text = str(v.help_text) + ', ' + '{attendee_name_%s}' % f
+                        v.validators[0].limit_value += ['{attendee_name_' + f + '}']
+
+            if k.endswith('_attendee') and not event.settings.attendee_emails_asked:
+                # If we don't ask for attendee emails, we can't send them anything and we don't need to clutter
+                # the user interface with it
+                del self.fields[k]
+
     def clean(self):
         data = self.cleaned_data
         if not data.get('smtp_password') and data.get('smtp_username'):

src/pretix/control/templates/pretixcontrol/event/mail.html

@@ -41,13 +41,13 @@
             <legend>{% trans "E-mail content" %}</legend>
             <div class="panel-group" id="questions_group">
                 {% blocktrans asvar title_placed_order %}Placed order{% endblocktrans %}
-                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="order_placed" title=title_placed_order items="mail_text_order_placed" %}
+                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="order_placed" title=title_placed_order items="mail_text_order_placed,mail_send_order_placed_attendee,mail_text_order_placed_attendee" exclude="mail_send_order_placed_attendee" %}
 
                 {% blocktrans asvar title_paid_order %}Paid order{% endblocktrans %}
-                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="order_paid" title=title_paid_order items="mail_text_order_paid" %}
+                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="order_paid" title=title_paid_order items="mail_text_order_paid,mail_send_order_paid_attendee,mail_text_order_paid_attendee" exclude="mail_send_order_paid_attendee" %}
 
                 {% blocktrans asvar title_free_order %}Free order{% endblocktrans %}
-                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="order_free" title=title_free_order items="mail_text_order_free" %}
+                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="order_free" title=title_free_order items="mail_text_order_free,mail_send_order_free_attendee,mail_text_order_free_attendee" exclude="mail_send_order_free_attendee" %}
 
                 {% blocktrans asvar title_resend_link %}Resend link{% endblocktrans %}
                 {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="resend_link" title=title_resend_link items="mail_text_resend_link,mail_text_resend_all_links" %}
@@ -68,7 +68,7 @@
                 {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="custom_mail" title=title_order_custom_mail items="mail_text_order_custom_mail" %}
 
                 {% blocktrans asvar title_download_tickets_reminder %}Reminder to download tickets{% endblocktrans %}
-                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="ticket_reminder" title=title_download_tickets_reminder items="mail_days_download_reminder,mail_text_download_reminder" exclude="mail_days_download_reminder" %}
+                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="ticket_reminder" title=title_download_tickets_reminder items="mail_days_download_reminder,mail_text_download_reminder,mail_send_download_reminder_attendee,mail_text_download_reminder_attendee" exclude="mail_days_download_reminder,mail_send_download_reminder_attendee" %}
 
                 {% blocktrans asvar title_require_approval %}Order approval process{% endblocktrans %}
                 {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="ticket_reminder" title=title_require_approval  items="mail_text_order_placed_require_approval,mail_text_order_approved,mail_text_order_denied" %}

src/pretix/control/templates/pretixcontrol/event/mail_settings_fragment.html

@@ -13,11 +13,11 @@
             {% with exclude|split as exclusion %}
             {% with items|split as item_list %}
             {% for item in item_list %}
-                {% if item in exclusion %}
+                {% if item in exclusion and form|hasattr:item %}
                     {% with form|getattr:item as field %}
                         {% bootstrap_field field layout="horizontal" %}
                     {% endwith %}
-                {% else %}
+                {% elif form|hasattr:item %}
                     <div id="{{ item }}_panel" class="preview-panel form-group" for="{{ item }}">
                         {% with form|getattr:item as field %}
                         <label class="col-md-3 control-label">{{ field.label }}</label>

src/pretix/control/templatetags/mail_settings_preview.py

@@ -11,3 +11,12 @@ def split(value, delimiter=","):
 @register.filter(name="getattr")
 def get_attribute(value, key):
     return value[key]
+
+
+@register.filter(name="hasattr")
+def has_attribute(value, key):
+    try:
+        value[key]
+        return True
+    except:
+        return False